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The total population of South Africa is 57,398,421 people. The people of South Africa speak Afrikaans, English, Zulu, Xhosa, Tswana, Northern Sotho, Venda, Tsonga, Swati and Ndebele languages. South Africa's linguistic diversity is very diverse according to a fractionation scale, which for South Africa is 0.8652. The average age is about 25.7 years. Life expectancy in South Africa is 59. Female fertility rate in South Africa is 2.6. Around 31% of South Africa's population is obese. Ethnic diversity is very diverse according to a fractionation scale, which for South Africa is 0.7517. Details of the language, religion, age, gender distribution and advancement of the people of South Africa can be found in the sections below, as well as the section on education in the country.

Population
In South Africa, the population density is 43 people per square kilometer (112 per square mile). Based on these statistics, this country is considered sparsely populated. The total population of South Africa is 57,398,421 people. South Africa has approximately 3,142,511 foreign immigrants. Immigrants in South Africa account for 1 percent of the total number of immigrants worldwide. Immigrants in South Africa account for 4.6 percent of the total number of immigrants worldwide. South Africa's ethnic diversity is very diverse according to a fractionation scale based on ethnicity. Ethnic Fractionation (EF) deals with the number, size, socioeconomic distribution, and geographic location of diverse cultural groups, usually within a state or some other demarcated area. Specific cultural characteristics can refer to language, skin color, religion, ethnicity, customs and traditions, history, or other distinctive criteria, alone or in combination. These characteristics are often used for social exclusion and power monopolization. The index of ethnic fractionation in South Africa is 0.7517. This means that there is a very high number of unique ethnic groups in South Africa. EF is usually measured as 1 minus the Herfindahl concentration index of ethnolinguistic group proportions, which reflects the probability that two randomly drawn individuals from the population belong to different groups. The theoretical maximum of EF of 1 means that each person belongs to a different group. Read South Africa's average age and gender distribution statistics at different ages below.

Old
The average age is about 25.7 years. The average age of men is 25.4 years and the average age of women is 26 years.

Gender
The sex ratio, or number of males per female (estimated at birth), is 1.02. It can be further broken down into the following categories: sex ratio below 15 - 1; sex ratio from 15 to 64 - 1.02; sex ratio over 64 - 0.69; Overall sex ratio - 0.99. The overall sex ratio differs from the sex ratio estimated at birth. This is because some newborns are included in the sex ratio estimated at birth, but die within the first few weeks of life and are not included in the overall sex ratio.

Religion
South Africa's majority religion is Christianity, whose adherents make up 81.2% of all religious believers in the country. Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus Christ as presented in the New Testament. Christianity is the largest religion in the world with over 2.4 billion followers known as Christians. Christians believe that Jesus is the Son of God and the Savior of mankind, whose coming as Christ or Messiah was prophesied in the Old Testament. Besides Christianity, there are several other religions in the country. Other religions in South Africa are Islam, folk religions. South Africa's religious diversity is very diverse according to a fractionation scale based on the number of religions in South Africa. The index of religious fractionation in South Africa is 0.8603. This score means that several major religions in South Africa coexist with each other and with some subordinate beliefs.